Emergency-valve device.



W. V. TURNER. EMERGENCY VALVE DEViCE.

I APPLICATION FILED MAY 6 X913. 1,145,045.

Patent-ed July 6, 1915.

s E s s F- N n w mum: Psmrs. m 4

NITED STATES ATE T OFFICE.

WALTER v. TURN-ER, or nnenwoon, rENNsYLvANIA, AssIeNoR TO THE wnsrme Boner. AIR BRAKE COMPANY, or WILMER-DING, PENNSYLVANIA, A conromrion or PENNSYLVANIA.

EMERGENCY-VALVE DEVICE.

Application filed May 6, 1913. Serial No. 765,772.

To all whom it may concern:

Be it known that I, 'AL'ri-u: V. TURNER, a citizen of the United States, residing at Edgewood, in the county of Allegheny and State of Pennsylvania, have invented new and useful Improvements in lluiergency- Valve Devices, of which the following is a specification.

This invention relates to fluid pressure brakes, and more particularly to an apparatus for controlling both the brakes and the doors and steps of cars by means of fluid under, pressure. I

The principal object of my invention is to provide improved means for controllingthe ca'r brakes'and the doors and steps.

In the accompanying drawing, Figure 1 is a diagrammatic view of a car air brake eipi'ipnunit embodying my invention, and showing the emergency valve device in normal release position; Fig. 2 a central sectional view of the emergency valve device, showing the parts in emergency application position; Fig. 3 a face view of the rotary valve of the motormans brake valve; -,and

Fig. l a plan view of the seat for said rotary valve.

The apparatus on the car may comp-rise an emergency valve device 1', connected by a pipe 3 to a supply 'reservoir'2, b pipe 4: to brake cylinder 5, and by pipes 6, and 8 to a inotormans brake valve 9.

The emergency valve device 1 has the usual piston chamber 10 containing piston 11 and valve chamber l2 containing slide valve 13. The piston chamber 10 is 'con-' 'nected to the automatic emergency and brake valve supply pipe 6 and the'valve-chamber 12 is connected by pipe 3 to reservoir 21 a A passage 14, containing achohe plug 15, leads fromlthe seat of slide valve 13- and communicates ivit-h the emergency pipe 6, The straight airpipe 8 connects with passage 16 leading to the seat of the slide valve 13. Pipe 7 contains a double check valve 1-7 for controlling communication to t l1e' car doors and steps and connects with a passage 18-also leading to the seat of slide 13. Pipe 6 connects with passage 19 iii-the brake valve 9 leading to the valve chamber 20 above the rotary valve 21. Referring to the ilan view of the'rotary va re seat, as shown in Fig. I of the (ll:l\\'lll the port=22there1n connects with H001 and step controlling pipe Specificationof Letters Patent.

port 22 in the seat.

Patented July 6, 1915.

plied t'rom reservoir 2 through pipe 3 tovalve chamber 12 and thence flows through passage It and the choke plug 15 to piston chamber 10 and through emergency pipe 6 to the rotary valve chamber 20.

A straight air application of the brakes is made by turning the brake valve handle to service position, in which the through port 3i in the rotary valve registers with straight air port 24. Fluid under pressure is then supplied from the rotary valve chamber 20- through pipe 8, passage 16, cavity 36 in emergency slide valve 13, and passage 57 to brake cylinder pipe at. The supply of fluid in the rotary valve chamber 20 is maintained by flow from reservoir 2 and valve chamber 12 through passage la r and emergency pipe 6.

If, While the brakes are thus applied, it is desired to hold the car doors and steps in I closed position,v the brake valve handle is turned to service lap p'ositionfin' which the port-27 in the rotary valve registers with through port 35 in the rotary valve, so thatfluid under pressure is supplied to pipe 7 and acting on the double check valve 17,

' shifts the same so as to open the brakevalve side of pipe 7- to pipe 37 which leads to the door and step operating mechanism.

The brakes are released after a straight air application by turning the brake valve handle to release position, in which the straight air port' 2alis connected to the exhaust port 25 through port openings 31 and 30 of the cavity 26 in the rotary valve, so

Pipe 7 is thus connect- I ed to the exhaust and the door and step op-' that fi uid i s releasedifrom the brake, derthrough the straight air pipe" If the doors-and 'steps areito heclosed in releasing' the brakes, the brake val ve hai'idle is merely leftin the running and release position, the port'openlng 28 1n t he rotary valve connecting the port 2.2 with the exhaust' It the doors andsteps are to'he opened.- the brake 'valve handle is turned to the release door. operating position, in Rvhich -the through port 32 registers with pol-F22, so

that fluid is Supplied to the'door and step operating mechanism for shifting the doors and steps to .open position.

'withemergency train pipe port 23.

- In order tdmake an emergency appl ica' tlon of the brakes,"th e brake valve handle 1s turned to emergency position, in which the.

the restricted port in choke plug15.-

The emergency valve device may be protitled with a difl'erential piston head 38 and in release position; the outer face of this piston head is subject to-atmospheric pres sure, being connected passage-3!) with the straight a1r passage'16. Consequently in making; an emergency application ofthe brakes, the pressure in p1ston.chamher 1O is reduced to a point sufiicient to overcome in Fig. Qof the drawing. Inthis position,

"the clifierentialin pressures due to the small piston head 38 being sub ect to atmospheric pressure,'t l 1en the piston 11,' is operatedto' shift the slidevalve 13 to' the position shown the. passage 57 is uncovered by the 1nove- "mentof slide .valve 1,3, so that fl udun'der I to'pipe 7;

pressure is supplied from valve chamber'12 and reservoir '2 to the brake c vlincler.- A

ters withpassage. 18, so that'fluidis supplied i a s I Ihe'douhle check valve ll 1s thereupon shifted so as to open connnunication through I pipe 7' from the emergency door and step control pipe 37,. Theadinis- .sion of fluid to pipe 37 operates the'door' and the'doors and'steps to open position Lport 24, so thatan'y .fluicl in the straightair small equalizing port 49 through the piston 11, fluid-under pressure will equalize from valve chamber 12 to. piston; chamber 10 and since the oute'r side ofthe s'm'al1-piston-38iis now connected'througlithe straight ail-pipe the emergency positiongof" the brake -valve,"port 33 registers 'with'straight air ports i'ii l the *ivith thea'tmospl'iefre,-'1t \v1ll he seen thata itferential pressure s exerted on the outert'aee 'of pisvalve parts to release {in 'lhe-elner gency valvedevire n a-a also lieton' ll which operates-to shift-the Quie -gene) 1)]ltl'ilt0tl; by means of the so-'(.'alled dead mans' valve which comprises a valve l1 asso-' mated with theelertrie car rontrollefrl'l .so'

,. that \vhen the inotorinau removes his hand frtmfthe (-ou'troller hamlle-the valve ll is automatically opened and fluid is vented from pipe 43 and passage 14+. 'll e passzige H .leads'to one side of, a valve piston l5 nd ltllQ opposite side of the valve pistmi i' s connected h) a passage -H' \vitlrimssage 14 leading to piston chainher 10. When fluid is vented from the outer fare of the valve .pist-on45. the piston chani'her" pressure acting' on the opposite sidethereoi. operates to shift the valve piston to its outer position. as. shown in 3 of the dra\\"ing.-in \vhich passage-l6. is connected .to-a passage open to. exhaust port ls. Fluid under pressure is thus vented from piston chamher wand an. emergency application of the .ln'akes'is.

etl'erted in the same manner as hereinliefm'e (-les('-rihed with the lirakevalve in einerfllfi l' application position. i

It will now he evident that \vith the ap-' paratus desm-ihed, asingle operator. su'clras themotoruian has full control of the doors and steps and may open or closethe same as desired either when the brakes are applied or when they are released, and upon an emergency application of the. brakes; the eu1ergenc v valve device automatically effects.

the opening of the doors and steps; so that passengers may readily get outof the car if I necessary. through port 40111 slide valve 13 also regisidoors'mav he controlled and in other cases both the doors: and steps arepneumatically gcontrolled, and since it is not essential to the invention as'to which arrangement, may be VitlY sldeof the'double check'valve to the employed, it will be understood that-the simtrance and exit controlsmay bemused.- i [Having now described my lnvention, whatters Patent, is:

1. The combim tion'with abrake va1vede -fluid 1 pressure for operating the car doors;

where the opening and closing of the doors is effected by jfluid pressure.

. The combination with a lease of the fluid pressure'brakes on a car,'; of means governed by said brake valve de-' gvice' for controlling the fluid pressure for operating a mechanism adapteclto effect the I brake vaix' d 5 ce. for. controlling the application and replereference to car door control in the I clannsisintended to apply to such car. en-

' stepmechamsm so as to automatically throw 11 I [claim as new. and desire tosecure by Ijetopening and closing of the car doors when the brakes are applied and'when the brakes are released.

3. The combination with a brake valve device for controlling the application and the release of the fluid pressure brakes on a car, of means for controlling a car door operating mechanism including ports in the brake valve device'adapted in one position of the brake valve device with the brakes applied to effect the operation of the car door operating mechanism to open the doors and in another position, with the brakes applied to effect the operation of the car door operating mechanism to close the doors.

4:. In a fluid pressure brake, the combination with a valve device for applying and releasing the fluid pressure brakes on a car and'a brake valve for controlling said valve device, of means associated with said valve device for pneumatically controlling a car dooroperating mechanism and ports in said brake valve for supplying and releasing fluid under pressure to and from said car door operating mechanism, said brake valve being provided with positions for effecting the operation of said car door operating mechanism to open and to close the car doors both when the brakes are released and when the brakes are applied. p

5. In a fluid pressure brake, the combination with an emergency valve device operating upon a sudden reduction in fluid pressure for effecting an emergency application of the brakes, of means associated with said emergency valve device for controlling a car door operating mechanism and operative upon movement of the emergency valve device to emergency position for effecting the operation of the car door operating mechanism, to thereby open said doors.

I 6. In a'fluid pressure brake, the combination with an emergency valve device operating upon a sudden reduction in fluid pressure for effecting an emergency application of the brakes and a brake valve having means for controlling the brakes, of means associated with said emergency valve. device for pneumatically controlling a car door op erating mechanism, and ports controlled by said brake valve for also controlling the fluid pressure for operating'said car door operating mechanism.

7. In a fluid pressure brake, thecombination with an emergency valve device operating upon a sudden reduction in fluid .presfluid under pressure is supplied through the other communication,

In testimony whereof I have hereunto set my hand.

IVALTER V. TURNER. \Vitnesses A. M. CLEMENTS, B. A. OLIVER. 

